Christmas party w infant

Alexia

My son is 3 months old, my MIL ( we live with her & her husband) is throwing a big Christmas party with 20 people there is gonna be drinking an just a lot of loud people. Me an my fiancé don’t really want the baby around that stuff even though it won’t be starting until after he’s in bed.. but with RSV we’ve been avoiding him meeting new people he’s around the people he’s met but we don’t feel comfortable with new people especially groups of 20 that’s just a lot an it makes us nervous. We knew she was having a party but we weren’t told 20 people or the fact that it’s gonna be an all night thing. I was thinking me my fiancé & our son go to my grandpops for the night to be extra safe and make sure he doesn’t get sick I’m just wondering if we r being dramatic an should just stay or if we should go to my grand pops to be safe?